<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <!-- 2.声明要被vue所控制的DOM区域 -->
    <div id="app">{{message}}</div>
    <!-- 1.导入脚本文件 -->
    <script src="lib/vue-2.6.12.js"></script>
    <!-- 3.创建vue的实例 -->
    <script>
      const vm = new Vue({
        el: '#app',
        data: {
          message: 'aa',
        },
      })
    </script>
  </body>
</html>
